Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index at System.ThrowHelper.ThrowArgumentOutOfRangeException() at System.Collections.Generic.List`1.set_Item(Int32 index, T value) at Bevelstone.EditVoicepack.DomainModel.Gvp.GvpGenerators.GvpGenerator.GetIdentifiersAndVariants() at Bevelstone.EditVoicepack.DomainModel.Gvp.GvpGenerators.GvpGenerator.RunCreate(Object state) at Bevelstone.EditVoicepack.DomainModel.Extensions.ExceptionExtensions.Rethrow(Exception exception) at Bevelstone.EditVoicepack.DomainModel.ThirdPartyInstaller.InstallerFactory.CreateFiles() at Bevelstone.EditVoicepack.DomainModel.ThirdPartyInstaller.InstallerFactory.Run() at Bevelstone.EditVoicepack.UpdateProcess.HiddenForm.OuterWorkerThread()

I saved. Then when thru and deleted ALL of My Modification Telephony Designators, saving periodically then exiting EVP. After the deletions were complete, I updated voicepak, then exited EVP. I must point out here that there were as many as five duplicates for various call signs.

Reopened EVP, and carefully scanned for duplicate call signs, saving again periodically. Did this several times. I reopened EVP for a final time and once satisfied I had no more duplicates, I Updated Voicepak. No errors were thrown!